ExpertPhysics & Chemistry
Expert Physics & Chemistry Quiz: Schrödinger, Pauli, Quantum Levels
Expert physics and chemistry quiz: fermions and quantum states, Schrödinger's equation, mass conservation, electron energy levels and photon energy.
Physics & Chemistry quizzes
Atoms, forces, energy
The Physics & Chemistry theme is about matter and what makes it move or change. It covers the atom and its particles, the periodic table, chemical reactions, acids and bases, as well as forces, motion, heat, electricity, light and the different forms of energy, with names such as Newton, Mendeleev, Faraday and Marie Curie.
You will find classroom notions and their everyday applications: why ice floats, how a battery works, what a joule or a newton measures. Physics & Chemistry rounds are free, quick to play, and you pick from five levels, from very easy to expert; an explanation follows every answer.
Quizzes
Hard Physics & Chemistry Quiz: Higgs, Entropy and Periodic Table
A hard physics and chemistry quiz on quantum uncertainty, the Higgs particle found at CERN, entropy, the 1869 periodic table and the neutron. 10 questions.
MediumPhysics & Chemistry
Physics & Chemistry Quiz: Newton's Laws and Atoms (Intermediate)
Intermediate physics and chemistry quiz: the symbol Na, electrical energy units, the three laws of motion, a toxic combustion gas and the nucleus.
Physics & Chemistry Quiz: Speed of Light, Radioactivity, pH (Easy)
Easy physics and chemistry quiz on the speed of light, the Curies and radioactivity, atoms, heat-releasing reactions and the acidity scale. Free.
Very easyPhysics & Chemistry
Physics & Chemistry Quiz: Oxygen, Water and Gravity (Very Easy)
Very easy physics and chemistry quiz: the symbol for oxygen, water's boiling point, the apple and gravity, states of matter and Earth's pull. 10 questions.
Related themes
Frequently asked questions about Physics & Chemistry
What are Newton's three laws of motion?
The first is inertia: a body keeps moving in a straight line at constant speed, or stays at rest, unless a net force acts on it. The second links force to acceleration (F = m × a). The third is action and reaction: when one body pushes on another, it feels an equal and opposite force.
How is the periodic table organized?
Devised by Dmitri Mendeleev in 1869, it arranges the chemical elements by increasing atomic number, which is the number of protons in the nucleus. Columns group elements with similar chemical properties, such as the alkali metals or the noble gases, and the rows are called periods.
What does the pH of a solution measure?
pH indicates how acidic or basic a water-based solution is, on a usual scale from 0 to 14. At 25 °C, a value of 7 is neutral, like pure water, below 7 is acidic, like lemon juice, and above 7 is basic, like bleach.